Mounting for electrical devices



Feb. 5, 1929.

H. J. CRABBS MOUNTING FOR ELECTRICAL DEVICES 2 Sheets-Sheet 1 Filed July 28, 19-23 INVENTOR Herber 7 J Crabbs.

WITNESSES:

ATTORNEY Feb. 5, 1929. 1,700,882

J. 'CRABBS MOUNTING FOR ELEcTRrpAL DEVICES Filed July 28, 1925 2 Sheets-Sgt 2 WITNESSES: INVENTOR I I BY ATTORNEY Patented Feb. 5, 1929.

UNITED STATES PATENT OFFICE.

IGI l OR TO WESTINGHOUSE r1015! OF PENNSYLVANIA.

MOUNTING FOR ELECTRICAL IDEVICES.

Application filed July 28,

My invention relates to disconnecting switches and more particularly to means for facilitating the assembly thereof.

One object of my invention to provide a disconnecting switch that is easily and readi- 1y assembled in the field.

Another object of my invention is to pro vide a disconnecting switch which is accea sible both from the front and back of the mounting,

A further object of my invention to pro vide a mounting for a disconnecting switch which is composed of a plurality of adjustable supporting strips which define openings therebetween.

It is another object of my invention to provide a disconnecting switch, the substantial 1y indentical parts of which are adapted for either front or rear connection.

It is also an object of my invention to provide supporting clamps for the insulators incidental to disconnecting switches which may be assembled with said insulators and handled as a unit.

As is well known, disconnecting switches are a necessa y part of all transmissionlines. The circumstances surrounding the use of these disconnecting switches and the associated structures vary greatly and, accordingly, it has heretofore been found necessary to provide a great many types of disconnecting switches to meet the many and varied rcquirements.

I propose to provide a disconnecting switch and supporting mounting in which it is only necessary to change the supporting insulators in order to meet the requirements for the many different types. l also propose to construct a disconnec ing switch that is readily assembled in the old from the several elements constituting the finished switch, thercby cliininatii the necessity for transporting the disconnecting switch in its assembled form. Other oljects and advantages of my disconnecting switch will hereinafter appear In the accompanying drawings,

1923. Serial No. 654,329.

Fig. 2 is a plan view of a supporting insulator and clamp therefor.

F 3 is a sectional View thereof taken along the line .HIIH of Fig. 2.

In the several figures of the drawing, like reference numerals indicate similar parts.

In the preferred form of my invention, shown in the drawings, a disconnecting switch 1 comprises a blade member 2, a pivoted supporting jaw 23 and a contact jaw d. Suitable latching means 5 may be placed on the blade 2., if desired. The latching means, here shown, form no part of the present invention, jut are shown and described in the application of Christian Aalborg, Serial No. M6258, filed February 19, 1921, which is assigned to the l festinghouse Electric & lilanufacturing Company.

Suitable terminal members 6 and 6a are associated with the jaw members 3 and 4;. The j aw members 3 and 4c are mounted on insulators 7 and To which are, in turin supported by suitable clamping means 8 on a mounting which comprises spaced-metallic supports 9, preferably forniied of angle-iron. The metal he supports 9 may be spaced apart any suitable distance in conformity with the size of the disconnecting switch which they support. whereby openings are left between the several strips such that the blade 2 may be reached by a suitable hook-stick from the front or the rear of the mounting,

As is shown in Figs. 2 and 3, the supports 9 are in the form of angle-irons, one flange thereof being provided with a plurality of slots 11 the edge thereof being scalloped at a plurality of points 12, which are in spaced relation to the several slots ll. The radius of the several scallops l2 is slightly greater than that of the insulators 7 and 7a in order that the insulators may pass therethrough and be capable of a certain amount of longitudinal adjustment relative to the supports 9.

As is shown in Figs. 2 and 3, the clamps 8 form an important element of my invention. Each clamp comprises four similar curved metal sections 13, ll, l5 and 16 each of which is provid with a plurality of bolt ho an upti, v

handled as a single unit.

form a complete ring in one plane, while the sections 15 and 16 form a ring about themsulator 7 in another plane. The flanges 17 of the two rings are oppositely disposed in order to engage the opposite faces of one of the corrugations on the insulator 7. If desired, a gasket 18 may be placed between the two rings. Protecting material 19 in sheet form may also be placed between the flanges 17 and the material of the insulator 7, when desired. Referring to Fig. 2, it will be seen that each of the sections 13, 1 1, 15 and 16 is engaged by at least a pair of bolts and preferably by at least three bolts. It is to be understood that equivalent forms of fastening devices may be substituted in place of the bolts here shown and such substitution is within the scope of my invention.

The intersections of the rings composed of the sections 13, 14 and 15, 16 are set at right angles to each other, which causes the intersections of one ring to be opposite the midpoint of the sections comprising the other ring. It will thus be seen that it is possible to place a bolt through the sections 13 and 15 and another bolt through the sections 14: and 16 in such manner that the clamp 8, as a whole, is held in position about the insulator 7 and the clamp and insulator may then be This is an important feature of my invention for the reason that it enables the clamp 8 to be assembled on the insulator 7 and shipped as a unit therewith. To assemble the disconnecting switch in field, it is only necessary to bolt the clamp 8 to the supports 9 in the manner shown in Fig. 2.

If desired, the opposite faces of the clamp 8 may be sheared off in order to provide a clearance space between the upstanding flange of the supports 9, although this is not a necessary step in the construction of my improved disconnecting switch.

By reason of the slots 11 and the scallops 12 in the supports 9, it is possible to secure a certain amount of longitudinal adjustment of the insulator 7 with respect to the mounting. It is to be understood that in the construction shown in Fig. 1, both of the insulators 7 and 7a are provided with my improved supporting means.

In the construction shown in Fig. 1, the insulator 7 is of a greater length than the insulator 7a andencloses a conductor 20 in order to pass through the supports 9 in or der to permit the terminal 6a to be attached at the rear of the mounting. Therefore, it will be understood that any modifications and variations in the form of the switch may be secured by simply re-arranging its component parts.

It will also be seen that I have provided a supporting means for the disconnecting switch which permits of ready access to the disconnecting switch by a hook-stick from either side of the mounting. I have also provided an improved form of clamp for securing the disconnecting switch to the mounting, which clamp may be mounted on the supporting insulator and they then may be handled as a unit.

Although I have described a specific embodiment of my invention, it will be ob vious to those skilled in the art that various changes may be made in the details of construction without departing from the princ-iples herein set forth. I desire, therefore, to be limited only by the spirit and scope of the appended claims,

I claim as my invention:

1. The combmation with an insulator having an irregular portion, of a supporttherefor comprising a plurality of segments disposed to constitute two cooperating rings around the insulator with the segments in one ring in staggered relation to the seg ments in the other ring, and means for drawing the rings together to clamp the irregular portion of the insulator.

2. The combination with an insulator hav ing a corrugated portion, of a support therefor comprising a plurality of like segments disposed to constitute a pair of cooperating rings around the insulator with the segments in one ring in staggered relation to the segments in the other ring, and means for drawing the rings together to clamp the corrugated portion of the insulator.

3. The combination with. an insulator having a corrugated portion, of a support therefor comprising a plurality of segments provided with curved flanges disposed to constitute a pair of cooperating rings around the insulator with the segments in one ring in staggered relation to the segments in the other ring, and means for drawing the rings together to clamp the corrugated portion of the insulator.

l-. The combination with an insulator having a corrugated portion, of a support therefor comprising a pair of semi-circular seg ments disposed to constitute a ring around the insulator, a second pair of semi-circular segments disposed to constitute a ring around the insulator for cooperation with the first named ring, and means for connecting the front portion of each segment in one ring with the rear portion of a cooperating segment in the other ring, whereby the rings my be drawn toward each other to clamp a corrugated portion of the insulator between them.

5. A supporting member for insulators comprising, in combination, a plurality of like segments arranged to constitute a pair of cooperating clamping rings with the segments in one ring overlapping the joints between the segments in the other ring and means for connecting the front portion. of each segment in one ring with the rear portion of an overlapping segment in the other may be held in position on the insulator and ring. be drawn together to clamp a portion of the l 6. A supporting member for insulators insulator between them.

comprising, in combination, a plurality of In testimony whereof, I have hereunto segments arranged to constitute a pair of cosubscribed my name this twenty-sixth clay of operating rings, and means for connecting July 1923.

each segment in one ring with two of the segments in the other ring whereby the rings HERBERT J. CRABBS. 

